A reading of the tractate Pesahim from the Babylonian Talmud (c. 500) makes it clear that in Talmudic times, matzo soaked in water was permitted during Passover; the Ashkenazi rabbi and exegete, Rashi (c. 1100), also indicates that this was unobjectionable (Berachot 38b).
Pesahim (Hebrew: פסחים, lit. "Passovers") is the third tractate of Seder Moed ("Order of Festivals") of the Mishnah and of the Talmud.
The Jewish Encyclopedia states that during the time of the Second Temple, the festival of Shavuot received the specific name of "'Aẓarta" as cited by Josephus in Antiquities of the Jews (iii. 10, § 6) and in the Talmud's tractate Pesahim (42b, 68b), signifying "the closing feast" of Passover.
Based on Rabbi Lichtenstein's Talmud classes at Yeshivat Har Etzion, his students' notes have been edited and published as Shiurei Harav Aharon Lichtenstein on Tohorot, Zevahim, the eighth chapter of Bava Metzia, the third chapter of Bava Batra, the Ramban's pamphlet on Dinah DiGarmi, the first chapter of Pesahim, Masechet Horayot, and several critical chapters of Gittin.
The am ha'aretz are denounced in a very late and exceptional passage in Talmud Bavli Pesahim 49, where they are contrasted with the chachamim ("wise") and talmidei chachamim ("wise students", i.e. scholars of the Talmud).
He was the author of a compendium of ritual laws concerning the festivals, published by Bamberger under the title of Sha'are Simḥah (Fürth, 1862; the laws concerning the Passover were republished by Zamber under the title Hilkot Pesaḥim, Berlin, 1864), and a philosophical commentary on Ecclesiastes, known only through quotations in the works of later authors (Dukes, in Orient, Lit. x. 667-668).
# Pesahim: (פסחים) ("Passover Festivals") deals with the prescriptions regarding the Passover and the paschal sacrifice.
Gross (l.c.) thinks that Gornish may be identical with Gournay, in France, and that "M. of Gornish," apparently the author of the Tosafot of Gornish, may be Moses of Gornish and identical with the Moses of גריינץ mentioned in the Tosafot of Sens (to Pesaḥim).